@Markymark1 

You may have 3 options:

1. Try reinstall QBD 2010 on compatibility mode Win 7

2. If you are using Win 10 Pro (not Win 10 Home), utilize Hyper-V to install Win 7 and QBD 2010

3. Upgrade to QBD 2021. You may purchase a one time license of QBD 2021 Pro 1 user as worth < $299